Projectile



April 21, 1931. A. FERRI-:TON

PROJECTILE Filed Jan. 29, 1930 frauen/23071' fir-mold Perreov.

Patented Apr..2l, 1931 UNITED STATES PATENT oFElcE Application filed January 29, 1930. Serial No. 424,273.

This invention relates to a projectile, and

Earticularly to a type of projectile that may e utilized as a means of propulsion for ve' hicles, particularly j I The object of the invention is to provide a device which may be rigidly fastened to a.

vehicle and particularly to the fuselage of an aeroplane and receive its propelling force from a high pressure gas which passes l through the projectile and finally is discharged through a plurality of exhaust nozzles which are positioned at regular intervals around the periphery ofthe projectile.

Another object of the invention is to pro-l vide a resistance area of novel construction within the projectile, said area being formed by providing a series of fixed partitions which control the direction of flow of the pressure fluid, together with a plurality of vibrating diaphragms, one of which is located in each space formed by the presence of the partitions, for the purpose of resisting the iow of the pressure gas through said spaces, with the result that a forward thrust is imparted to the projectile and then transmitted by the latter to the aeroplane.

The invention consists in a construction as set forth in the following specification and particularly as pointed out in the claims thereof.

Referring to the drawings:

Figure 1 represents a partial side elevation and partial central longitudinal section through a projectile embodying my invention.

Fig. 2 is a transverse section taken on the line 2`2 of Fig. 1, the diaphragms being illustrated inthe upper half of the view, and the partitions in the lower half of the View.

Fig. 3 is an enlarged transverse section taken on the line 3-3 of Fig. 1, looking in the direction of the arrows on said line. l

Fig. 4 is an enlarged detail sectional view illustrating the partitions and vibrating diaphragms.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings7 5 represents a casing consisting of an outer shell 6 and an inner shell 7 The casing is preferably circular in cross aeroplanes.

section and tapers from an intermediate point thereofl both forwardly and rearwardly and the maximum diameter of the casing is located nearer the front of the casing than it is the rear. Extending longitudinally through the casin upon the ,longitudinal median line thereo is a conduit 8 which discharges atits rear end into an inlet chamber 9. A control valve 10 is located at the for ward end of the conduit 8 and an inlet pipe 11 for a'pressure iuid is connected to said valve 10. Surrounding the conduit 8 and extending from the control valve 10 rearwardly to the inlet chamber 9 are a plurality of partitions 12,k each of which embodies therein an inner lange13 and an outer flange 14, the fiange 13 being rigidly secured to a member 15 which surrounds the conduit 8, and the flangeA 14 being rigidly secured to the inner shell 7.

A majorit' of the partitions 12 are frustoconical,v in orm and converge toward the front end of the casing 5. l The inclination, however, of the partitions decreases gradually from the front partition to the inlet chamber 'and several of the partitions that are located adjacent to the. inlet chamber 9 are fiat. The partitions 12 divide the interior of the casing into a plurality of resistance chambers 16 which progressively increase in area from the rear of the casing 5 toward the frontthereof. The rearmost resistance chamber 16 is separated from the inlet chamber 9 by a partition 17 in which are a plurality of apertures 18, and each of the partitions 12, furthermore, is provided with a plurality of apertures 19 which are regularly spaced therearound adjacent to their peripheries.

he foremost resistance chamberl6 is connected by means of a plurality-fof apertures 20 with discharge nozzles 21 which are provided at regular intervalsaround the riphery of the casing 5. The nozzles 21 extend yrearwardly for a distance from the apertures 20 along the periphery of the casing 5 and discharge at 22 to the atmosphere. Locatgad Within each resistance chamber 16 is a diaphragm 23 which is constructed of sheet material and is secured at 24 to the inner shell 7. Each diaphragm 23 is tapered in form to correspond to the inclination of th-.e partition 12 against which it rests and each diaphragm has a plurality of annular corrugations 25 formed thereon which @Lv-. tend entirely around the diaphragm. In their normal position bent portions 2G of the diaphragm abut against the front surface of the partition 12 and said bent portions. 2G furthermore are located adjacent to shouldered portions 2T, that extends around 'the front surface of each partition.

The general operation of the device hereinbefore specifically described is as follows: A fluid under high pressure from a suitable source of supplyT is conducted into the casing 5 through 'the inlet pipe 11 and passes into the conduit 8, being controlled by means of the valve 10. The conduit 8 conducts the pressure fluid from the front of the casing 5 to the extreme rear end thereof Where it is discharged into the chamber 9 from which it passes through the apertures 1S of the partition 17 into the first resistance chamber 16. Upon entering this chamber, the fluid impinges against the diaphragm 23 causing the latter to vibrate. The fluid then passes around the inner edge of this diaphragm and then outwardly between the diaphragm and the surface of the next partition against the ressure of the incoming gas upon the other side of the partition which is tending to force the latter forwardly, finally passing through the apertures 19 into the next resistance This action is repeated in each of the resistance chambers until the fluid reaches the extreme front chamber from which it passes through the apertures 2O into the nozzles 21 from which it is discharged through the orifices 22.

As the pressure fluid passes through the various resistance chambers, the function o the fixed partitions is to control the direction of flow of the pressure fluid, while the function of the vibratable diaphragms is to resist this floW.

claim:

1. A projectile comprising, in combination, a casing provided with an inlet orifice at one end thereof and a discharge orifice at the other end thereof, a plurality of transverse partitions within said casing between said orifices dividing the interior of the casing into a plurality of intercommunicating spaces, and means Within saidspaces to offer a resistance to the circulation of a pressure fluid therethrough.

2. A projectile comprising, in combination, a casing provided with an inlet chamber at one end thereof and a plurality of discharge orifices at the other end thereof, a plurality of transverse partitions within said casing between said inlet fchamber and discharge orifice dividing the interior of the casing into a plurality of intercommunicating spaces, and a vibratable diaphragm within each of .said spaces and adapted to resist the circulation of a pressure fluid therethrough.

3. i projectile comprising, in combination, a casing provided with an inlet chamber at one -end thereof and a plurality of discharge orifices at the other end thereof, a plurality of transverse partitions Within said casing between said inlet chamber and discharge orifice dividing the interior of the casing into a plurality of intercommunicating spaces, and a corrugated diaphragm Within each of said spaces adapted to offer a resistance to the circulation of a pressure fluid therethrough.

4. A projectile comprising, in combination, a casing provid-ed with an inlet chamber at one end thereof and a plurality of discharge orifices at the other end thereof, a plurality of transverse partitions Within said casing between said chamber and discharge orifice dividing the interior of the casing into a plurality of intercommunicating spaces, and a tapered corrugated diaphragm Within each of said spaces adapted to offer a resistance to the circulation of a pressure fluid therethrough.

5. A projectile comprising, in combination, a tapered r:asing provi ed with an inlet orifice at the small end thereof and a plurality of discharge orifices adjacent to the larger end thereof, a plurality of transverse artitions Within said casing between sai orifices dividing the interior of the casing into a plurality of spaces of progressively increased areas, and a vibratable diaphragm Within said spaces adapted to offer a resistance to the circulation of a pressure fluid therethrough.

6. A. projectile comprising, in combination, a casing provided with an inlet chamber at one end thereof and a discharge orifice adjacent the other end thereof, a plurality of tapered partitions Within said casing between said inlet chamber and discharge orifice dividing the interior of the casing into a plurality of intercommunicating spaces, and a tapered corrugated diaphragm Within each of said spaces adapted to offer a resistance to the circulation of a pressure fluid therethrouoh.

7 projectile comprising, in combination, a casing provided with a plurality of discharge orifices adjacent to one end thereof, a conduit extending longitudinally therethrough and adapted to discharge a pressure fluid into the casing at the otherfend thereof, a plurality of partitions surrounding said conduit and provided with apertures therein and dividing the interior of the casing into a plurality of intercommunicating spaces, and means Within each-of saldi-spaces to offer a resistance to the circulation of the pressure fluid therethrough.

8. A projectile having, in combination, a casing provided With an inlet chamber at one end thereof and a plurality of discharge orifices adjacent the other end thereof, a conduit for a pressure fluid extending longitudinally through said casin Vandpcommunicating with the inlet cham er, a plurality of partitions surrounding said Conduit and provided with apertures therein and dividing the interior of the casing into a plurality of intercommunicating spaces, and acorrlugated diaphragm Within each of said spaces. adapted to offer a resistance to the circulation of the pressure fiuid therethrough. l

9. A projectile having, in combination, a casing provided with an inlet chamber at one end thereof and a plurality of discharge orifices adjacent the other end thereof, a conduit for a pressure fluid extending Vlongitudinally through said casing and communieating with the inlet chamber, a plurality of tapered partitions provided with apertures therein and rigidly secured of the conduit and the interior surface vof the casing and dividing the interior of thecasing into a plurality of intercommunicating spaces, and a tapered diaphragm Within each of said spaces adapted to offer a resistance to the circulation of the pressure fiuid through the spaces.

10. A projectile having, in combination, a casing provided With an inlet chamber at one end thereofand orifices ad j acentthe other end thereof, a conduit for a pressure fiuid extending longit-udinally through said casing and communicating with the inlet chamber, a plurality of frusto-conical partitions surrounding said conduit and rigidly secured at their narrow extremities to said conduit and at their out`- er peripheries to said casing and dividing the interior of the casing into a plurality of intel-communicating spaces, and a corrugated diaphragm Within each of said spaces rigidly secured at its outer edge to t-he interior surface of the casing, said diaphragm being adapted to offer a resistance to the circulation of the pressure fluid through the spaces.

l1. A projectile having, in combination, a casing provided with an inlet chamber at one end thereof and a plurality of rearwardly directed discharge orifices adjacent to the other end thereof, a conduit for a pressure fiuid extending longitudinally through said casing and discharging into said inlet chamber, a plurality of transverse partitions surrounding said conduit and progressively increasing in area from the inlet chamber toiyard the discharge orifices, said partitions being provided withv openings extending therethrough adjacent to their outer periph; cries, and a corrugated diaphragm located Within each of said spaces and rigidly secured at its outer periphery to the casing, said diaphragm being adapted to resist the circulation of the pressure fiuid through the spaces.

to the 'exterior a plurality of discharge j ing in area from the inlet chamber toward the discharge orifices, said partitions being provided with openings extending therethrough adjacent to their outer and a corrugated diaphragmlocated Within each of said spaces and rigidly secured at its outer periphery to the casing, said diaphragms progressively increasing in area from the' inlet chamber toward the discharge orifices and being adapted to resist the circulation of the pressure fluid through the spaces. 13. A projectile having, in combination, a casing provided with an inlet chamber at the rear end thereof. and a plurality of rearwardly directed discharge orifices adjacent tothe other end therof, a conduit for a pressure fluid extending longitudinally through said casing and discharging into said inlet chamber, a plurality of frusto-conical artitions surrounding the conduit and rigi ly sethe casing, said particured thereto and to tions being provided with openings therein adjacent to their outer peripheries, and a tapered diaphragm provided with annular corrugations thereon located Within each of said spaces and rigidly secured to the casing, said diaphragms being adapted to offer a resistance to the passage of the pressure fluid through the spaces. b

14. A projectile having, in combination, a casing provided with an inlet chamber at the rear end thereof and a plurality of rearwardly directed discharge orifices adjacent to the other end thereof, a conduit for a pressure fiuid extending longitudinally through said casing and dischar 'ng into said inlet chamber, a plurality o tapered partit-ions surrounding the conduit and rigidly secured thereto and to the casing, said partitions progressively increasing in area from the inlet chamber toward the discharge orifices, and a tapered corrugated diaphragm Within each of said spaces, said diaphragms being rigidly peripheries, l

secured to the casing and progressively ingressively increasing in area and also increasing in inclination from the inlet chamber toward the discharge orifices, and a tupered diaphragm in each of said spaces and rigidly secured at its outer periphery to the casing, sind daphrugms progressively increasing in area und in inclination from the inlet chunxberftowaril the discharge orifices.

In testimony whereof I have hereunto set 10 my hand.

ARNOLD PERRETON. 

